Can't forward ports on an M2 mac

Mark53

Bit poster
Basically the title. New computer, new install of parallels 18, whenever I try to set up port forwarding in either the UI or CLI I get:

Failed to update Virtual Network Shared: The specified values for the "Shared" network conflict with your Mac's network settings and won't be applied. Please correct virtual network settings and try again.
​
Note that I've tried forwarding random ports like 31923, no luck. Obviously it's not a conflict with my network settings, I'm guessing parallels doesn't have access to do something, but I've no idea how to debug this.

Exact command I'm running:
/usr/local/bin/prlsrvctl net set Shared --nat-tcp-add tcp899,899,9828c048-fc4e-4d56-87fe-a9d8f69cd9d7,899​
 
For anyone else that encounters this issue (when turning wifi on and off doesnt help): In my case it was a VPN that used an IP in the same range as one of the networks.

Hint: Using Help -> Send Technical Data you can get access to a lot of logfiles (without actually having to send them). I was able to debug my problem this way.
 
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